<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>test</title>
</head>
<!--  style="margin: 0px; padding:0px" 作用是去白边  -->
<body>
    <button onclick="window.open('https://5719c.com/index/loginInterface.do')" target="_blank" rel="external">
            <img src="myimage.jpg" border="0" vspace="0" title="" alt="" />
    </button>
</body>
<style>
body{
    margin:0px 0px 0px 0px;
    padding:0px 0px 0px 0px;
}
button{
    width: 100%;
    height: 100%;
    border: #fff;
    background: yellow;
}
img{
    margin:0px 0px 0px 0px;
    padding:0px 0px 0px 0px;
    width: 100%;
    height: 100%;
}
</style>
</html>
